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Regulating facilities that handle mixed radioactive and chemical waste in Washington State

In addition to providing oversight and permitting for cleanup at the U.S. Department of Energy's Hanford site, our Nuclear Waste Program provides oversight of the commercial Low-Level Radioactive Waste Disposal Facility subleased by US Ecology Washington, Inc., French nuclear fuels fabricator AREVA NP, Inc., waste treatment facility Perma-Fix Northwest, and the Puget Sound Naval Shipyard.

US Ecology, Inc.

US Ecology, Inc., is a commercial low-level radioactive waste disposal facility located near the center of the Hanford site on 100 acres of federal land leased to the State of Washington. It has been in operation since 1965. The Washington Department of Health regulates current waste disposal activities at the facility The Department of Ecology is leading a Model Toxics Control Act study to investigate chemical releases from the facility and to recommend a remedial action to ensure that human health and the environment is protected.


AREVA NP, Inc. is a French-owned company in Richland, WA, that makes nuclear fuel assemblies for commercial nuclear reactors across the globe. It is operated under a license from the Nuclear Regulatory Commission. We provide regulatory oversight for the temporary storage under a permit of mixed waste that results from its operations.

Perma-Fix Northwest

Perma-Fix Northwest is a waste treatment facility specializing in treating and packaging low-level and mixed low-level waste. Most of the waste they treat is from Hanford.

Puget Sound Naval Shipyard

Ecology has issued a permit for storage of mixed wastes at the Mixed Waste Storage Area at the US Navy's Puget Sound Naval Shipyard located in Bremerton, Washington.

For more information see our permit page.